Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:16:19 2012 Optimize a model with 3920 rows, 3192 columns and 14728 nonzeros Presolve removed 337 rows and 56 columns Presolve time: 0.09s Presolved: 3583 rows, 3136 columns, 13832 nonzeros Variable types: 0 continuous, 3136 integer (3136 binary) Found heuristic solution: objective 30.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 3113 iterations, 0.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (3113 simplex iterations) in 0.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%